111361543019 has 2 divisors, whose sum is σ = 111361543020. Its totient is φ = 111361543018.

The previous prime is 111361543001. The next prime is 111361543043. The reversal of 111361543019 is 910345163111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111361543019 - 2¹² = 111361538923 is a prime.

It is a super-2 number, since 2×111361543019² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111361543019.

It is not a weakly prime, because it can be changed into another prime (111361543619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55680771509 + 55680771510.

It is an arithmetic number, because the mean of its divisors is an integer number (55680771510).

Almost surely, 2^111361543019 is an apocalyptic number.

111361543019 is a deficient number, since it is larger than the sum of its proper divisors (1).

111361543019 is an equidigital number, since it uses as much as digits as its factorization.

111361543019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 111361543019 in words is "one hundred eleven billion, three hundred sixty-one million, five hundred forty-three thousand, nineteen".